Seamless Carbon Steel Hydraulic Tubing For Excavator Hydraulic Oil Pipe

Seamless Carbon Steel Hydraulic Tubing For Excavator Hydraulic Oil Pipe

 

Description:

 

Synopsis of Process Routing: Cold drawn and bright NBK seamless steel tube is used as the tube to be phosphated. The phosphated is realized with the imported chemical fluid to form a black film. The antirust oil is absorbed by means of the micro pore on the film to prevent from the rust. The caps are covered at two ends of tube to prevent from the dust.

Internal Surface quality Control:We adopt automatic inner surface cleaning machine, rotating brush cleaning and high pressure oil flushing to clean the inner and outer surface.The new steel tube production craftsmanship can effectively remove all particulate attached to the inner and outer surface of tubes and thus achieving the utmost surface cleaness and polishness.

Main Features: color of steel tube: bright black. Color is homogeneously distributed on the tube surface. The tube has good property of antirust.

 

 

Applications:

 

Used in hydraulic system,including automotive Hydraulic power steering system, the clutch system, braking system, engine high pressure oil pipe, excavator hydraulic oil pipe,nested card connector (pipe joints) with matching,shippment industry.

 

 

Specifications:

 

Size:OD4mm-60mm,TH0.5mm-7mm

Standard:DIN1630

Material: ST37.4,ST44.4,ST52.4

Delivery State:NBK+Black phosphate.

 

Chemical composition(cast analysis)a
Steel grade		% by mass
Steel name	Steel number	C	Si	Mn	P	Sb	AI
		max.	max.	max.	max.	max.	min.
E215	1.0212	0.10	0.05	0.70	0.025	0.025	0.025
E235	1.0308	0.17	0.35	1.20	0.025	0.025	-
E355C	1.0580	0.22	0.55	1.60	0.025	0.025	-

 

Mechanical properties at room temperature
Steel grade		Minimum values for the delivery conditiona,b
Steel name	Steel number	﹢CC		﹢LCC		﹢SR			﹢Ad		﹢N
		Rm	A	Rm	A	Rm	ReH	A	Rm	A	Rm	ReH	A
		MPa	%	MPa	%	MPa	MPa	%	MPa	%	MPa	MPa	%
E215	1.0212	430	8	380	12	380	280	16	280	30	290 to 430	215	30
E235	1.0308	480	6	420	10	420	350	16	315	25	340 to 480	235	25
E355	1.0580	640	4	580	7	580	450f	10	450	22	490 to 630	355	22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Competitive Advantage:

 

Certificate awarded:TS16949 since 2009.

Main Customer:Contitech,Benteler.

We have to cooperate with Volkswagen.

We also have been reviewed by BMW.